Heel-concaving machine



A 8, 1933. J. w. STAPLES ET AL 1,921,641

HEEL CONCAVING MACHINE Filed Nov. 19, 1931 7 Sheets-Sheet l [merzlors John t'eZcZ Staples Walfer Cheslepflfaofiis tiorneyl? HEEL CONCAVING MACHINE Filed Nov. 19, 1931 '7 Sheets-Sheet 2 J3 J35 J 9 John Wirfie (cl 5290165 Walter (has @Broofls rney Aug. 8, 1933.

J. W. STAPLES ET AL HEEL- CONCAVING MACHINE Filed NOV. 19, 1931 7 Sheets-Sheet 6 Inveniors Johnhltlvyield Sfaples Waller C/zesle bjroofils '6' 80 frat-311s.

1933. J. w. STAPLES ET AL 1,921,641

HEEL CONC AVING MACHINE Filed Nov. 19, 1931 '7 Sheets-Sheet 4 InverzZors Z66 John Winfield Sta; WaZZerChesZqgBrooKs 13;; W J Q tier-72439::

Aug. 8, 1933. J. w. STAPLES ET AL HEEL GONCAVING MACHINE Filed Nov. 19, 1931. 7 Sheets-Sheet 5 Zapea Walter Chesle qflroolis 1 [7212121150115 John Wirdielcl 5 fl rrze ys.

W 8, 1933. J. w. STAPLES ET AL l 1,921,641

HEEL CONCAVING MACHINE Filed Nov. 19, 1931 7 Sheets-Sheet 6 [na e ntors John 14/ ield 5ltqvles Walter C esle qfirooiis Aug. 8, 1933. J. w. STAPLES ET AL 1,921,641

HEEL CONCAVING MACHINE Filed Nov. 19, 1951 7 Sheets-sheaf. 7

. Inventors John wiryfield sta les Q WqZZer Chesleyfiroofis tto rneys Patented Aug. 8, 1933 UNITED STATES PATENT OFFICE HEEL-CONCAVING MACHINE Massachusetts Application November 19, 1931 Serial No. 576,000

14 Claims.

This invention relates, particularly, although not exclusively, to machines of the type described in a copending application, Serial No. 397,918, filed October 7, 1929, for heel concaving machine. In general, the machine described in the above mentioned application comprises a stationary support having a slot through which projects a rotating cutter. A heel guide is carried upon the support and extends over the slot adjacent the edge of the cutter to engage the edge of the seat of a heel while it is being moved over the cutter. A heavy arm is pivotally mounted upon the machine and is provided with two spaced surfaces substantially parallel to the support between which slides a cam or pattern having a portion which corresponds substantially with the edge contour formed by the back and sides of the heel seat. This cam carries means for holding a wood heel. The cam is rotated while being guided to cause the heel to move in engagement with the cutter alonga path substantially parallel to the edge contour of the heelseat. A resilient pressure acts upon the pivoted arm to maintain the edge of the seat of the heel in engagement with the heel guide while the heel is engaging the cutter. i

It is the object of the invention to provide certain improvements in machines of the general type described in the above mentioned co-pending application.

The invention will be more clearly understood from the following description in conjunction with the accompanying drawings, in which:

Fig. 1 is a plan view of a machine embodying the invention.

Fig. 2 is a side elevational view of the same partly broken away.

Fig. 3 is a front elevational view of the same partly broken away.

Fig. 4 is a sectional view taken upon the line 4-4 of Fig. 3.

Fig. 5 is a sectional view taken upon the line 55 of Fig. 2.

Fig. 6 is a detail plan view of a portion of the machine.

Fig. '1 is a sectional view taken upon the line 7-7 of Fig. 3.

Fig. 8 is a perspective detailed view of a portion of the machine, and I Fig. 9 is a sectional ,view taken upon the line 99 of Fig. 2 partly broken away.

in the accompanying drawings, since the invention is capable of other embodiments and of beingpracticed or carried out in various ways. Also it is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation, and it is not intended to limit the invention beyond the terms of the several claims hereto appended as considered in view of the prior art and the requirements thereof.

The machine illustrated in the accompanying drawings comprises a frame 10 carrying a stationary support 11. A lever 12 is pivotally mounted at an intermediate point in a suitable bearing carried by the frame 10. A motor 14 is car ried at one end of the lever 12 and holds the other end against a stop 15 adjustably mounted in the frame 10. A cutter shaft 19 is rotatably mounted in suitable bearings 16 carried by the lever 12 near the end thereof which engages the stop 15. A cutter 17 is fixed upon the shaft 19 so as to project through an elongated slot 18 in the support 11; A heel guide 9 is adjustably mounted upon the support 11 in any suitable manner so that its edge projects over the end of the slot 18 and terminates adjacent the edge of the cutter 17. A pulley 20 is suitably fixed upon the shaft 19 and is connected with a pulley 21 carried by the armature shaft of the motor 14 by a belt 22. A vertical shaft 23 is rotatably mounted in a sleeve 24 fixed in the frame 10 and is provided at its lower end with a worm wheel 25 adapted to engage a worm 26 upon the armature shaft of a motor 27. A disc 29 having a conical periphery is suitablyfixed on the shaft 23 near its other end. A pulley 32 slidably mounted upon the shaft 23 above the disc 29 carries a friction clutch 31 adapted to engage the disc .29 and connect the shaft 23 and pulley 32.

A stationary arm 35 is fixed upon the sleeve 24 and supports ball bearings 36 adapted to' engage an arm 37 pivotally mounted on the sleeve 24. The free end of the arm 37 is provided with spaced shelves 38 and 39 substantially parallel to the support 11 and between which a cam or pattern 40 is slidably mounted. A spring'148 connected at one end to the arm 37 and at its other end to a screw 149, adjustably mounted in a lug 150 extending upwardly from the stationary arm 35, is adapted normally to hold the'arm' 3'7 in-engagement with a stop" 152 adju'stably mounted in the lug 150. The camAO is formed: with a body portion 41 having a continuous wan- 43 extending upwardly from the edge'ther'eof. Teeth 42 are provided near the bottom of the'outer surface of the wall 43 and are adapted to engage a pinion 44 carried by a shaft 45 rotatably mounted in suitable bearings upon the arm 37. A pulley 46 is rotatably mounted upon a shaft 45 and is connected with the pulley 32 by a belt 47. An arm 48 is suitably secured to the shaft 45 and is provided at one end with an operating handle 49. A pin 50 is slidably mounted in the other end of the arm 48 and is adapted to be detachably received in an opening 51 in the pulley 46 thereby operatively connecting the shaft 45 and pulley 46.

A guideroll 53 is rotatably mounted in the arm-.37 to engage the upper outer surface of the wall 43 above the teeth 42. The cam 41 is held in engagement with the pinion 44 and guide 53 by a roll 54 engaging the inner surface of the wall 43 and pivotally mounted on one arm of a three armed lever 55. The inner wall of the pattern 40 is provided with a depression 151 for a purpose described hereinafter. The lever 55 is pivotally mounted at an intermediate point upon the arm 37 and its arm 55a is connected toone end of a spring 56, the other end of which is secured to a bolt 57 adjustably mounted in a lug carried by the. arm 37. p

A beveled tongue 60 depends downwardly from the body portion 40 of the cam 41 through an opening in the lower shelf of the arm 37 and is adapted to be received in a similarly shaped guideway 61 in a slide 62. A beveled tongue 63 depends from the slide 62 and is adapted to be received in a similarly shaped guideway 64 carried by a slide 65. The beveled tongues 60 and 63 are annularly disposed so that the slides 62 and 65 may be adjusted, preferably, along perpendicular paths. The slides 62 and 65 are held in desired adjusted position by set screws 66.

Spaced rods 70 (Figs. 3, 4, 6 and 7) are suitably secured in cars 71 extending laterally from opposite sides of the slide 65 and extend downwardlytherefrom toward the support 11. A bracket 72 extends between the rods 70 and is suitably secured thereto. mounted in guideways 74 in the bracket 72 and. is held in adjusted position by a screw 75 engaging the same passing through one of a plurality of openings 76 in a cover plate 77 suitably fixed upon the bracket 72 as by screws 78. A plunger 80 having a slot 79 to receive the screw 75 is slidably mounted in suitable guideways 81 in the gauge 73 and is held therein by the cover plate 77. Stops 7 and 8 limit the forward and rearward movement of the plunger 80. A roll 83 is pivotally mounted on one end of the plunger 80. The sides of the plunger 80 are provided with high and low cam surfaces 85 and 86 adjacent the roll 83 and are adapted to be engaged by rolls 87 pivotally mounted upon one end of levers 88 pivotally carried by the rods 70. A rod 90 is slidably mounted in each of a pair of spaced bushings 91 pivotally mounted upon the bracket 72. One end of each of the rods 90 is provided with a bearing 94 pivotally engaging a pin 92 on the plunger 80. A spring 93 surrounds each of the rods 90 with one end engaging the bushing 91 and its other end engaging the bearing 94. A pair of springs 95 connect the arms 88 and the bushings 91. 'A roll 98 is pivotally mounted on a bracket 96 extending between and suitably secured upon the rods 70.

The'other end of each of the arms 88 is provided with a split bushing 99 adapted to receive a rod 100 which is secured in desired adjusted position therein by a bolt 101. One end of each A heel gauge 73 is-adjustablyrod 100 is split to provide a clamping portion 102 integral with the rod and a clamping portion 103 detachably mounted thereon by a bolt 104. Each of a pair of spaced tapped holes 105 and 106 are formed partly in each of the clamping portions 102 and 103 in which threaded heel engaging members 107 and 108 respectively are adjustably secured.

An arm 110 is fixed upon a shaft 111 carried by a bracket 112 extending laterally from the arm 37. The arm 110 is fixed in adjusted position upon the bracket 112 by a nut 113 threaded upon the upper end of the shaft 111 and engaging the bracket. An arm 115 is pivotally mounted at an intermediate point upon the shaft 111 and is provided with an abutment 116 adapted to engage a stop 117 on the arm 110. The abutment 116 normally is held in engagement with the stop 117 by a spring 118 one end of which is connected to the end of the arm 115 and the other end of which is connected to a screw 119 adjustably mounted in the end of the arm 110. A projection 120 extends from the lower side of the other end of the arm 115 and is positioned in the plane of movement of the roll 83 carried 100 by the plunger 80 and is adapted to swing beneath the roll 98.

A foot treadle is pivotally mounted at an intermediate point in a bracket 126 and is connected at one end to one end of a vertically 105 130 extending upwardly from the arm 37. The 110 other end of the lever 128 is provided with a pair of forked arms 131 each carrying a roll 132 adapted to engage the bottom edge of the clutch 31. A spring 134 connected at one end to the lever 128 and connected at its other end to the 115 frame 10 normally holds the clutch 31 out of engagement with the disk 29. Toggle links 135 and 136 are pivotally connectedat one end to a rod 137. The other end of the link 136 is pivotally carried by the arm 37 and the other 120 end of the link 135 is provided with an elongated slot 138 adapted to receive a pin 139 carried by the lever 128. The rod 137 extends through and is slidably mounted in an opening 140 and in an arm 141 forming one arm of the three 25 arm lever 55. A spring 142 surrounds the rod 137 with one end in engagement with the arm 141 and its other end in engagement with a collar 143 adjustably mounted upon the rod 137. A pin 145 is fixed upon the rod 137 adjacent the 3 arm 141. I

A lever 146 is pivotally mounted upon the frame 10 so as to engage a lug .147 on the lever 12 to move the cutter 17 to a position so that it may be replaced. If desired, the support 11 may 135 be provided with a plurality of openings 153 communicating with a suction pipe 154 so as to remove any chips or shavings from the surface of the support 11.

In the operation of the machine the motors 140 v faces 86 to the high cam surfaces 85 causing the arms 88 to swing about the rods 70 to bring the heel engaging members 107 and 108 into engagement with the heel W to hold the same against the support 11 and heel gauge 73.

The operator then withdraws the pin 50 from the opening 51 in the pulley 46 and turns the arm 48 to rotate the pattern and move the heel. The portion 5 of the pattern 40 is shaped to correspond substantially to the edge contour of the seat of the heel W so that when the pattern 40 is moved the heel W will be moved to bring it in engagement with the cutter 1'7 along a path substantially parallel to the edge contour of the heel seat extending around the sides and back of the heel from one side of the breast to the other side of the breast. During this movement the edge of the heel is pressed against the guide 9 by the action of the spring 148. The remaining portion 4 of the pattern 40 is shaped so that after the heel has been concaved it is returned quickly to its initial position through a path out of range of the cutter. As the operator turns the arm 48 t0-move the pattern 40 he observes the path of travel of the heel W so as to ascertain whether or not any adjustments of the slides 62 and are required and, if so, makes the adjustments so that when the pattern is moved the wheel W will move through a desired path in engagement with the cutter 17 to concave the seat of the heel and leave a uniform margin around the same.

In the normal operation of the machine the pin 50 is again inserted in the opening 51 in the pulley 46 and the heel W clamped against the support 11 as previously described. The foot treadle 125 is actuated to cause the rolls 132 carried by the lever 128 to move downwardly thereby permitting the clutch 31 carried by the pulley 32 to drop into frictional engagement with the disk 29, thereby completing driving connection between the motor 27 and the pattern 40. The movement of the lever 128 straightens the toggle formed by the links 135 and 136 so as to maintain the clutch 31 in engagement with the disk 29. When the pattern has moved to return the heel to substantially its initial position the roll 54 drops into the depression 151 in the inner surface of the wall of the pattern 40 causing the arm 141 to swing into engagement with the pin 145 to move the rod 137 and break the toggle and permit the spring 134 to actuate the lever 128 and move the clutch 31 out of engagement with the disk 29. In this manner, the driving connection between the motor 27 and pattern 40 is automatically broken to stop the movement of the pattern. Just before the heel has returned to its initial position the roll 98 engages the arm 115 to swing it against the action of the spring 118. At about the time the heel has returnedto its initial position, the roll 98 rides off the end of the arm 115 thereby permitting the tension in the spring 118 to swing the projection 120 into engagement with the roll 83 to move the plunger forwardly to eject the heel. During the forward movement of the plunger 80, the rolls 8'7 ride ofi the high cam surfaces 85 onto the low cam surfaces 86 thereby permitting the springs to swing the heel engaging members 107 and 108 out of engagement with the heel.

We claim:

1. In combination, a cutter, means for holding a heel, means for actuating the holding means to move the heel about the cutter in a predetermined path, an ejector movable to engage and eject the heel, a movable member, a spring for causing said member to move into engagement with said ejector, and means adapted to move into engagement with said member to move the latter against the action of said spring and to move out of engagement with said member as said heel reaches a predetermined position whereby said spring causes said member to move said ejector to eject said heel.

2. A machine for concaving heels having, in combination, a cutter, means for holding a heel, means for actuating the holding means about the cutterfrom an initial position back to the initial position in a curved path during which the seat of the heel is brought into engagement with the cutter progressively along a path parallel to the edge contour of the heel seat, a slide movable to render said holding means ineffective and to engage the heel and eject the same, a movable member, a spring for causing said member to move into engagement with said slide, and means movable with said heel holding means adapted to move into engagement withsaid member to move the latter against the action of said spring and to move out of engagement with said member as said heel returns to its initial position whereby said spring causes said member to move in engagement with said slide to eject said heel.

3. In combination, a cutter, means for holding a heel, mechanism for actuating the holding means to move the heel about the cutter in a predetermined path, means for rendering said mechanism inoperative including a clutch, a movable arm, means connected to said clutch tending to render it inoperative, means for holding said clutch in operative position including a rod slidably connected to said arm, and means for causing said arm and rod to move to render said clutch inoperative when said heel has returned to its initial position.

4. In combination, a cutter, means for holding a heel, mechanism for actuating the holding means to move the heel about the cutter in a predetermined path, means for rendering said mechanism inoperative including a clutch, a movable arm, means connected to said clutch tending to render it inoperative, means for holding said clutch in operative position including a toggle, a rod slidably connected to said arm and operatively connected to said toggle, a stop on said rod, and means for causing said arm to move to engage said stop and move said rod to render saidclutch inoperative when said heel has returned to its initial position.

5. A machine for concaving heels having, in combination, a pattern having an edge contour a portion of which corresponds substantially to the edge contour of the seat of the heel, means for actuating the pattern, a guide, means for causing the edge contour of the pattern to follow the guide during the actuation of the pattern, a slide carried by the pattern, a second slide carried by the first mentioned slide, a heel clamp carried by the second slide, a cutter adapted to produce a concaving cut in the seat of the heel held by the clamp during the movement of the heel, and means for adjusting the positions of the slides with respect to the pattern to cause the seat of the heel to engage the cutter progressivea heel engaging member.

7. In. combination, a support, a gauge, a pan of movable members, a clamping jaw carried by each of said members adapted to engage and hold a heel on said support against said gauge, said clamping jaws each comprising a rod mounted in one of said members for adjustment rotatively and longitudinally and carrying a heel engaging member.

8, In combination, a support, a gauge, a pair of movable members, a clamping jaw carried by each of said members adapted to engage and hold a heel on said support against said gauge, said clamping jaws each comprising a rod mounted in one of said members for adjustment rotatively and longitudinally and adjustably carrying a heel engaging member.

9. In combination, a cutter, means for holding a heel, a shaft adapted to be rotated to actuate said holding means, a manually operable arm fixed on said shaft, power driven mechanism, and means for detachably connecting said arm and mechanism.

10. A machine for concaving heels having, in combination, a cutter, means for holding a heel, a source of power, means for connecting the holding means with the source of power to actuate the holding means about the cutter to cause the cutter to produce a concaving cut in. theseat of-the heel and return the heel to its initial position including a toggle link mechanism; and means for breaking the toggle link mechanism to to disconnect the holding means from the source of power automatically when the heel has returned to its initial position.

11. A machine for concaving heels having, in combination, a cutter, a pattern having a wall along its edge contour, means for actuating the pattern, means carried by the pattern for holding a heel to cause the cutter to produce a concaving cut in the seatof the heel and return the heel to its initial position, a source of power, means for connecting the actuating means with the source of power including a toggle, a guide roll for engaging said wall to guide the pattern during its actuation, mechanism including means for yieldingly maintaining the guide rollagainst the wall adapted to break the toggle to disconnect the holding means from the source of power,

and means for causing said mechanism to break said toggle when said heel has returned to its initial position.

12. A machine for concaving heels having, in combination, a support having openings, a rotatable cutter, means for holding the seat of a heel in engagement with the support, means for actuating the holding means to move the heel in engagement with the cutter progressively through a path parallel to the edge contour of the seat of the heel, and means for conducting shavings through said openings.

13. In combination, a support, a gauge, a pair of clamping jaws movable to hold a heel against said support and gauge, and means for adjusting the position of each of said jaws along an arcuate path in a plane perpendicular to the plane of the support.

14. In combination, a support, a gauge, a pair of clamping jaws movable to hold a heel against said support and gauge, and means for adjusting the position of each of said jaws along an arcuate path in a plane perpendicular to the plane of the support, and radially with respect to said path.

JOHN W. STAPLES. WALTER C. BROOKS. 

